func (configgen *ConfigGeneratorImpl) buildSidecarOutboundHTTPRouteConfig(
	node *model.Proxy,
	req *model.PushRequest,
	routeName string,
	vHostCache map[int][]*route.VirtualHost,
	efw *model.EnvoyFilterWrapper,
	efKeys []string,
) (*discovery.Resource, bool) {
	listenerPort, useSniffing, err := extractListenerPort(routeName)
	if err != nil && routeName != model.RDSHttpProxy && !strings.HasPrefix(routeName, model.UnixAddressPrefix) {

	resources := make([]*discovery.Resource, 0)
	efKeys := cp.efw.KeysApplyingTo(networking.EnvoyFilter_CLUSTER)
	hit, miss := 0, 0
	for _, service := range services {
		if service.Resolution == model.Alias {
			continue
		}
		for _, port := range service.Ports {
			if port.Protocol == protocol.UDP {
				continue
			}
			clusterKey := buildClusterKey(service, port, cb, proxy, efKeys)